Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 422	$ (3,419)	$ (3,389)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Stock-based compensation expense	829	601	709
Provision for doubtful accounts	15	0	16
(Gain) loss on disposal of asset	(41)	0	1
Gain on sale of long-term investment	0	0	(990)
Depreciation and amortization	141	322	491
Changes in operating assets and liabilities:
Accounts receivable	(720)	(206)	(1,285)
Inventories	(740)	702	(1,114)
Prepaid expenses and other	(51)	(7)	(42)
Accounts payable	707	243	570
Customer deposits and deferred revenue	(984)	1,477	331
Accrued expenses	(25)	58	(36)
Income tax payable	(65)	(5)	(78)
Deferred rent	(95)	(76)	(59)
Net cash used in operating activities	(607)	(310)	(4,875)
Cash flows from investing activities:
Proceeds from sale of investments	0	0	1,375
Proceeds from sales of property and equipment	50	0	0
Purchases of property and equipment	(339)	(127)	(45)
Net cash (used in) provided by investing activities	(289)	(127)	1,330
Cash flows from financing activities:
Line of credit (repayments) borrowings, net	(324)	(307)	1,408
Proceeds from issuance of common stock under private placement	0	1,138	0
Proceeds from issuance of common stock under employee plans	715	234	168
Net cash provided by financing activities	391	1,065	1,576
Effect of exchange rates on cash and cash equivalents	(10)	(377)	22
Net (decrease) increase in cash and cash equivalents	(515)	251	(1,947)
Cash and cash equivalents, beginning of year	2,324	2,073	4,020
Cash and cash equivalents, end of year	1,809	2,324	2,073
Supplemental Cash Flow Information:
Cash paid during the year for Income taxes	44	64	62
Cash paid during the year for Interest	27	49	4
Non cash transactions:
Net change in capitalized stock-based compensation	$ 24	$ 0	$ 0